In order to prevent excessive abrasion, the hardness of the grinding jars used and of the grinding balls must be higher than that of the material grinded. Normally grinding jars and grinding balls of the same material should be choosen. The grinding jars & balls configurations are listed below:

Jar Volume

50ml

100ml

250ml

500ml

1000ml

Ball size/qty

Ø6mm

50 pcs

100 pcs

280 pcs

500 pcs

1000 pcs

Ø10mm

8 pcs

16 pcs

40 pcs

100 pcs

200 pcs

Ø20mm

2 pcs

3 pcs

The size of the grinding jars and grinding balls should be determined experimentally if necessary.